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(No Model.) 2 SheetsSheet 2. J. GUARDIOLA.

COFFEE HULLER. No. 340,039 Patented Apr. 13, 1.886.

WITNESSES MENTOR I mm @mfiii 4QJM MM B Jil N, PETERS. Fhoh-LlllwgnpMI. Wmhmglon. D. C.

UNITED STATES PATENT Cl rical JOSE GL'ARDIOLA, OF CHOCOLA, GUATEMALA.

COFFEE-HULLER.

83E IFICATION forming part of Letters Patent No. 340,039, dated April 13, 1886.

Application filed June R, 1835. Penvwetl March 17, 1886. Serial No. 105,613. (No model.)

' and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

I 5 Figure l is a longitudinal sectional elevation -of my improved coffee-huller. Fig. 2 is a face view of the smaller end. Fig. 3 is a face view of the larger end of the inner section.

. The shaft A is rigidly held in suitable supports in such a manner that it cannot revolve, and on the said shaft is loosely mounted a sleeve, B, on which a disk, 0, is formed, and from the outer surface of which a ring or annular flange, D, projects, forming a belt--pulley. A conical or taperedeircular sheet-metal shell, E, has its smaller end secured by angleirons or otherwise to the inner surface of the disk C, and a ring, F, preferably made of castiron, is secured on the shell E at the wider end. The shell Eis provided on its inner surface with projections a, which may be produced in different ways.

' On the shaft A two disks or wheels, G, are rigidly mounted, and are united by wooden staves H, secured on the rims and forming a cone-frustum, J, parallel with but smaller than the shell E. On about one-third of the pe riphery of inner conical part, J, steel plates or graters K are held by leather or other flexi- 40 ble strips, K, or other hinges, in rows extending from end to end of the part E, so that two thirds of the outer surface of the conical part J are smooth or uncovered.

The plates K are pressed from the outer surface of the part J by semi-elliptical or other springs, L, interposed between the surface of the part J and the plates K, and upon the outer surface of the said plates projections b are formed. The free edges of the plates K are slightly curved toward the staves H.

A circular plate, M, connected with the larger wheel G, closes the end of the shell E,

the ring Fof the shell E revolving around the rim of the plate M.

An inclined chute, N, passes through the wheels G from the upper part of the larger end of the machine down to the lower part of the smaller end, and is held entirely by the part J. A hopper, O, is formed on the upper end of the chute N, and a gate, P, is proclosed a short distance below the hopper. A small chute, Q, is formed on the bottom of the plate M, and is provided with a gate, R.

\Vhen the machine is mounted, the chord uniting the ends of the segment formed by the staves H, on which the plates K are held, must be vertical, or nearly so.

The coffee, &c., to be hulled slides from the hopper 0 through the chute N into the space at that end of the shell E and into the annular space between the shell E and the part J, and, the shell E being revolved, the coffee is hulled.

The material is discharged at thelarger end of the cone, and moves toward the same by the slant of the shell E and by the rotation of the said shell.

In operation, the coffee is taken round by the centrifugal force of the rotating shell E, and, being moved along past the plates K, they contribute to hull and polish the coffee in its passage between them and the shell E, helped by the projections above mentioned. To prevent the breaking of any of the coffee, the springs placed under the plates K yield in proportion to the amount of coffee that is passed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a oolfee-huller, the combination, with a revolving shell having projections on its inner surface, of a fixed conical part within the shell having gratingplates on its outer surface, substantially as herein shown and described.

2. In a cofl'eehuller, the combination, with a revolving conical shell having projections on its inner surface, of a fixed conical part within the shell, grating-plates on the inner conical part, and a feed-chute extending through the inner conical part, substantially as herein shown and described.

vided, by means of which the chute N can be 3. Ina coffee-huller, the combination, with the fixed shaft A, of the sleeve B, the disk 0, the pulley D, the conical shell E, provided with projections on its inner surface, and the fixed conical part J within the shell, substantially as herein shown and described.

L. In a cofiee-hnller, the combination, with the fixed shaft'A, of the sleeve B, the disk 0, the shell E. the ring F on the free end of the same, and the conical partJ within the shell, substantially as herein shown and described.

5. In a cofiee-huller, the combination, with the fixed shaft A, of the sleeve B, the disk 0, the shell E, the ring F, the wheels G, the staves H, and the plate M, substantially as herein shown and described.

6. In a cofi'ee-huller, the combination, with the fixed shaft A, of the sleeve B, the disk 0,

E the shell E, the ring F, the plate M, having a chute Q, the wheels G, the slaves H, the chute N. and the .hopper O, substantially as herein elasticity in the direction from the surface on which they are hinged, substantially as here- 30 in shown and described.

J. GUARDIOLA.

Witnesses: I

EDGAR TATE, WM. W. LUYSTER. 

